Re: [問題] 處理溢位問題?
參考看看，應該不難理解
#include <iostream>
#include <limits.h> /* INT_MAX */
using namespace std;
int main (void) {
int a, b, c, d = 1;
cin >> a >> b;
c = a;
do {
if ((INT_MAX - a) < c) {
cout << "overflow!" << endl;
exit(1); /* terminate */
}
c = c + a;
d++;
} while (d != b);
cout << a << " * " << b << " = " << c << endl;
return 0;
}
※ 引述《xup6xu6 (是女的都好)》之銘言：
: 用int宣告變數寫乘法運算，要怎麼處理溢位問題
: int a,b,c,d=1;
: cin >> a >> b;
: c=a;
: do {
: c=c+a;
: d++;
: }
: while(d!=b);
: cout<<"a和b的積="<<c;
: 請問要怎麼改才能讓程式判斷當加到溢位時，cout<<"溢位囉!"
--
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◆ From: 61.229.0.106
※ 編輯: Dannvix 來自: 61.229.0.106 (04/12 21:21)
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